12312012202131 has 8 divisors (see below), whose sum is σ = 16416113895424. Its totient is φ = 8207959321800.

The previous prime is 12312012202121. The next prime is 12312012202151. The reversal of 12312012202131 is 13120221021321.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12312012202131 - 2¹⁹ = 12312011677843 is a prime.

It is a super-2 number, since 2×12312012202131² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12312012202098 and 12312012202107.

It is not an unprimeable number, because it can be changed into a prime (12312012202121) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11610595 + ... + 12626556.

It is an arithmetic number, because the mean of its divisors is an integer number (2052014236928).

Almost surely, 2^{12312012202131} is an apocalyptic number.

12312012202131 is a deficient number, since it is larger than the sum of its proper divisors (4104101693293).

12312012202131 is a wasteful number, since it uses less digits than its factorization.

12312012202131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24406481.

The product of its (nonzero) digits is 288, while the sum is 21.

Adding to 12312012202131 its reverse (13120221021321), we get a palindrome (25432233223452).

The spelling of 12312012202131 in words is "twelve trillion, three hundred twelve billion, twelve million, two hundred two thousand, one hundred thirty-one".